首页手记 JaveScript 之即时钟表

JaveScript 之即时钟表

标签：

Html/CSS JavaScript CSS3

时钟

自己刚做的时钟,有兴趣的可以看看

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <style type="text/css">
        #wrap{
            width: 240px;
            height: 240px;
            border-radius: 120px;
            background: cyan;
            margin: 50px auto;
            position: relative;
        }
        #clock{
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: white;
            position: absolute;
            left: 20px;
            top: 20px;
        }
        #bNumber{
            width: 100%;
            height: 100%;
            position: relative;
        }
        #bNumber div{
            width: 190px;
            height: 20px;
            position: absolute;
            left: 10px;
            top:90px;
        }
        #bNumber span{
            display: block;
            width: 20px;
            height: 20px;
        }
        .number{
            position: absolute;
            bottom:100px;
            transform-origin: 50% 90%;
        }
        #hour{
            width: 5px;
            height: 60px;
            left:100px;
            background: black;
        }
        #minute{
            width: 3px;
            height: 80px;
            left: 101px;
            background: gray;
        }
        #second{
            width: 1px;
            height: 90px;
            left: 102px;
            background: red;
        }
    </style>
    <body>
        <!--表盘-->
        <div id="wrap">
            <!--钟表-->
            <div id="clock">
                <!--指针数-->
                <div id="bNumber">
                    <div><span>9</span></div>
                    <div><span>10</span></div>
                    <div><span>11</span></div>
                    <div><span>12</span></div>
                    <div><span>1</span></div>
                    <div><span>2</span></div>
                    <div><span>3</span></div>
                    <div><span>4</span></div>
                    <div><span>5</span></div>
                    <div><span>6</span></div>
                    <div><span>7</span></div>
                    <div><span>8</span></div>
                </div>
                <!--时针-->
                <div id="hour" class="number"></div>
                <!--分针-->
                <div id="minute" class="number"></div>
                <!--秒针-->
                <div id="second" class="number"></div>
            </div>
        </div>
    </body>
    <script type="text/javascript">
        var bNumber = document.getElementById('bNumber');
        var divs = bNumber.getElementsByTagName('div');
        var spans = bNumber.getElementsByTagName('span')
        //通过旋转,重置钟点数的位置
        for(var i = 0;i < divs.length;i++){
            divs[i].style.transform = 'rotate(' + i * 30 + 'deg)';
        }
        //通过旋转,重置字的位置
        for(var i = 0;i < divs.length;i++){
            spans[i].style.transform = 'rotate(' + i * -30 + 'deg)';
        }

        var hour = document.getElementById('hour');
        var minute = document.getElementById('minute');
        var second = document.getElementById('second');
        function colorNumber (){
            //获取系统时间
            var nowTime = new Date();
            var nowHour = nowTime.getHours();
            var nowMinute = nowTime.getMinutes();
            var nowSecond = nowTime.getSeconds();
            var minuteDeg = nowMinute / 60 * 30;
            //时针旋转角度
            hour.style.transform = 'rotate(' + (nowHour * 30 + minuteDeg) + 'deg)';
            var secondDeg = nowSecond / 60 * 6;
            //分针旋转角度
            minute.style.transform = 'rotate(' + (nowMinute * 6 + secondDeg) + 'deg)';
            //秒针旋转角度
            second.style.transform = 'rotate(' + nowSecond * 6   + 'deg)';
        }
        colorNumber();
        setInterval('colorNumber()',1000)
    </script>
</html>

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